Diaphragm-horn.



F. w. STORCK.l

DIAPHRAGM HORN.

APPLICATION FILED DEC.17| 1915.

Patented June 13, 1916.

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F. vv. STORCK. I DIAPHRAGM HORN. APPLICATION FILED DEC. I7. |915.

1,186,615. y Pat-11111611111116111911 3 SHEETS-SHEET 2.

Ffw( sToRcK.

DIAPHRAGM HORN.

APPLICATION FILED DEC. I7. I9I5. I 1,186,615.- PMI-111161111111@ 13, 1911s.

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vopposite and overlaps flange 2.

FREDERICK W. STORC, OF SOMERVILLE, MASSACHUSETTS.

DIAPHRAGM-HORN.

Specification of Letters Patent.

Patented Jane i3, raie;

Application inea December 17'g 1915. serial No. 67,462.

Be it kno wn that I, FREDERICK W. SToRoK, a citizen of the United States, residing at Somerville, inthe county of Middlesex and Commonwealth of Massachusetts, havey invented certain new and useful Improvements borne by a diaphragm and it has been thel special object of my invention to construct a device which is capable of easy adjustment so as to produce sounds of -varying quality, duration and intensity and to compensate for the wear of certain parts.

It has .been my further object to so design and construct my device that it will be simple and easy to manufacture and to operate and readily mounted in convenient positions for operation.

My device may be best understood by reference to the accompanying drawings in which Figure 1 is a horizontal cross-section. Fig. 2 is a top view with the casing and diaphragm shown'in cross-section'. Fig. 3

is a cross-section on line 3 3 of Fig. 2.

Fig. 4 is a cross-section 'on line 4 -4 of Fig. 1, and Fig. 5 is a cross'section on line 5 5 of Fig. 1.

Referring now more .specifically to the drawings, in which like reference figures indicate like parts, 1 is a metal casing containing the moving parts, which casing is provided with an annular flange 2. .The horn 3 has an annular lbase extension 4, also provided with a flange 5 which lies These flanges 2 and' 5 embrace the edgeyof diaphragm 6 which is made of thin, flexible steel, and hold the diaphragm tightly in placewith the assistance of bolts 7 and nuts 8 which pass throughholes in the fianges and diaphragml The diaphragm. has washers 9 on each side thereof, preferably a hole in the center of diaphragm 6 'is firmly fixed a hard metallic contact member 10` provided with a thin eXtensionl.'

' position.

The casingl 1 is punched inwardly to form four shou1ders'12 (see Fig. 5) which form slideways for a frame 13 which is thereby slidably mounted in the casing against which it bears firmly by spring tension. The sliding movement of frame 13 is controlled by the screw 14 the threaded end of which passes through a threaded hole in the eenA- tral rear portion of the frame. This screw 14 is provided with a flange 15 .aga-rist which the spring washer 1'6 presses firmly, and, as the screw passes through a hole in the central rear portion lof thel casing 1 and is provided on its outer end with a collar 17 fastened thereon by means of a pin 18, the spring-washer '16l will cause the collar 17 to be firmly pressed against the outside of casing 1, thereby holding the screw Between the sides of the. frame 13 is nonrotatably mounted a spindle 19 on'which is` 4loosely mounted and free to revolve a iiywheel 20vwhich butts against the 'enlarged end 21 of the spindle 19.

(See Fig. 4.) This fly-wheel 20 has attached thereto by 4means. of rivets 22 a toothed wheel 23 which is held in spaced relation therewith by means of the washers 24. The wheel 23 has around hole 25 in its center through whicha pinion 2G freely passes and butts at one end against the fly-wheel 2,0 and at its other end against the idle roller 27 which has a flange 28. A collar 29, fast on the spindle 19, holds the parts borne by spindle 19 in close relation, and the spring washerV 30 borne by the spindle tends to press the slides of frame I13 apart, thus causing them to get a firm friotional bearing against casing 1, the end of spindle 19 adjacent to the spring washer 30 fitting loosely in a hole inJ bracket which is laterally extended and anchored in a slot 33 in wheel 23 so as to give the spring a firm bearing against a rivet 22 on one side and' the back of the pawl v31 on the other side, as shown in Fig. 3, where it is apparent that the pawl 31, because of the shape of its tooth 34, will rise against the tension of spring 32 and permit the free and independent rotation of the pinion 26 in one direcfirmly in as it is constantly held in engagement with the pinion by means of spring 32, onefend of tion, whereas if the lpinion is rotated in the other direction it will remain 'lockedwith the pawl and cause the ily-wheel 20, which bears the pawl and its attached toothed 'wheel 23, to be rotated with it. This rotation of the various rotatable parts iseected by the rack-bar which is provided-with a handle or pusher 36 and which has a serrated edge 37 for engaging the pinion 26. This bar 35 is rectangular in cross-section and enters casing 1 through a rectangular slot which is formed by punching out the' metal in a manner whereby three edges are eut away so that the punched out portion is turned down, thereby 'forming a lug or shoulder 38 as a bearing. A coil spring 39 is attached at one end to a slot l() in the inner end of therack bar and at its other end to a hole il in a lug 42 punched out of the top of casing l,v the hole tl'ierebyfo'rmed being covered by plate 43. This .spring 39 holds the rack-bar in engagement with the pinion 26, and returns it to its normal elevated position while at the same time permitting its free movement.v The rack-bar 35 has a slot 4l adjacent to its serrated portion whereby it embraces the flange 2S on the idle roller 27. As the rim ot' flange 2S contacts with the bottom of slot 44 it serves to hold the rack-bar and pinion in properv spaced relation so as to keep their teeth from botto1ning,,as it will be readily seen `from the foregoing that the rack-bar 35 is swingable so as to be kept in operative engagement with the pinion 2G whatever the position of adjustment of the wheel 23 in respect to the diaphragm 6.

Thus it will be'seen that the flange 2S serves to retain the rack-bar 35 in propel' alinement whether pressure ot' the operators hand 'is directlV and evenly applied thereon or not.

As the toothed or serrated edge of t-he wheel 23 contacts normally with the edge of the extension ll,`or the contact member 10 borne by the diaphragm 6, it will be apparent that the device will produce sound upon the revolution of the wheel 23 by means ot the downward thrust ot' the rack-bar which will revolve the pinion 26 and. flywheel 22 which is locked therewith by the pawl 3l in this direction of forced rotation. When t-he downward movement of the rackbar ceases or the bar is returned to normal position by spring 39 the pawl will permit the continued rotation of the fly-wheel 22 and the toothed wheel 23.

For mountlng my horn upon the side ot an automobile or deckof a boat or other place Where its use may be desired I have vprov1ded an adjustable bracket 45 with upmade in the base of, uthe bracket so that ity may be held 1n position by screws passing through said holes, or it may be otherwise clamped or retained in position. The angle of adjustment of the bracket in relation to t-he rest of my device may be varied by clamping arm -lG bydifferent bolts 7 in turn, there heilig preferably six or seven of these bolts used to retain flanges 2 and 5.

From the. oregoingit will be apparent that my horn will be -t'ree from objectionable rattling because its parts are held irmly together by spring tension notwithstanding the fact that they are capable ot' free movement and adjustment, which adjustment iseasilyobtained because of the accessibility otl the adjusting screw Il. It' this screw is set up so as to torce the wheel 23 into close relation 'with part ll of thecontact inember l0 a short, sharphigh pitched tone will result, whereas a lower and more prolonged tone will' be caused if the wheel 23 is slightly withdrawn as'the 'fly-wheel is ot' sutlicient weight to gather momentum as it spins so that its rotation will be maintained for some time after the initial operatingv torce has ceased. Thus. the horn may be quickly and easily adjusted to the varying requirements of tratlic, and the wea'r ot' tlie contacting sound-producing parts may be compensated.

Although I have employed in the particular form ot' my device herein described a wheel 23 having` a notched, or toothed, pe-

riphery for striking the contact mcn'iber 10, it is not to be understood that I limit my invention to this form otl roughened wheel as a wheel having separate projecting members attached thereto, on its periphery, or elsewhere, if the wheelis disposed at a ditl'erent,

washer 30 unnecessary, vetl I prefer vto use/ the spring washer notwithstanding the fact that I prefer to construct the frame with some spring tension ot itsv own whereby ,it may be brought to bear in frictional engagement with its slideways.

Having thus fully described my invention what I claim is."-

l.' In a device ofthe character specified the combination of a casing, a diaphragm. a contact member mounted on said diaphragm,

a wheel arranged to strike said contact member and an expansible slidable frame where- .on said wheel is mounted, said frame being adapted to bear with lirm spring-tension against said case.

2. In a device of the characte/r specified iso :the combination of a-casing, a diaphragm, 'a

contactmember mounted on said diaphragm,

a` roughened wheel, arranged to strike said conta'ctmember, an expansible frame Where- Aon said `Wheel is mounted, slide'ways in said the combination of a casing, a 'frame slidably mounted in said easing and provided Witha threaded hole, a screw passing through said' casing land entering .said

threaded hole, a collar fast on said soreW on the part thereof outside said casing, said screw being provided with a Harige on the part thereof inside said casing-and a spring Washer arranged. to press against said flange and hold said screw in positionby forcing said collar against said casing. Y

4. in a device of the character speciheda 1 casing, a frame slidably mounted therein, a

spindle borne by said frame, a roughened ivheel'on said spindle, a pinion on said spindie, a pawl attached. to said Wheel, a spring arranged to hold said pawl in yielding contact with said pinion,fsaid pawl being arranged to look with said pinion in one direction ot' its rotation only, a rack-bar eX- tending through an aperture in said casing and meshing with said pinion .and a spring for holding said ack-bar in operative engagement with said pinion.

In a device of the character speciiied ,a casing, a frame slida-bly mounted therein, a spindle borne by said tame, a roughened wheel on said spindle, a pinion on said spindle, a paivl attached to said Wheel, a spring tact with said pinion, said pawl being arranged to lock with said pinion in one direcltion of its rotation only, a slidable and swingabie rack-bar extending through an aperture in said. casing and meshing with said pinion, and a spring forv holding said mack-bar inoperative engagement with said pinion. Y i

G. lira device of the character specitied a casing, aframe slidably mounted therein, a

lspindle borne by 'said vframe, a roughened Wheel on said spindle', a pinion on saidspindie, a pawl attached to said, wheel, a spring arranged to hold saidpawl in yielding contact with said pinion, said pawl' being arranged to lock With vsaid pinion in one di rection of its rotation only, an idle roller' provided With a flange'adjacent to saidpinion, a rack-bar extending through an aperture in said casing and meshing With said pinion, said raok-`oar being provided With a l slot forming a bearing for saidiiange, and a spring for holding' said rack-bar Vin operative position.

7. ln' a device of the characterspeeiiedl the combination of a easing provided Awith an annular iiaiige, a member Vprotruding arranged i0 heid said 'pawi in yieiding conf from the central back portionv of said easing,

a plurality of'bolts extending through said flange, a bracket having'one vupwardly eX- tendiiig arm, which arm is providedI With a hole whereby it may embrace said memberprotruding fromthe'central back portion of ,said casing, and another arm provided With a hole whereby it maybe secured to said tlzinge by any onev of the bolts passing through said flange.

In Witness whereof I hereunto afiix my signature.

FREDERCK l/V. STORCK.

@opten of this patent may be obtained for five cents each, by addressing the "Commissioner ef Patents. Washington, D. C. 

